I made the effort to get there.
I cannot find the wind-blurred photographs that I took of the windmill farm at Ka Lae, Hawaii which is the southernmost point in the country of the United States of America; and I threw away the photographs that I took on an awful trip with a friend to Key West, Florida (he was drinking and horrible). Here is a free domain image and an attributed image that show those points of interest. It took me a lot of effort to get there to see them in person.
Caption: The southernmost point in the continental USA is Key West, Florida-free domain photo.
Caption: The southernmost point in the country of USA is Ka Lae , Hawaii.